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oil yellow

noun
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Definition of oil yellow

1 often capitalized O&Y
a : any of several oil-soluble yellow dyes
b or oil yellow II : a carcinogenic azo dye C6H5N2C6H4N(CH3)2 formerly used in coloring butter and oils; para-dimethyl-aminoazobenzene

— called also butter yellow, methyl yellow

2 : a moderate greenish yellow that is greener and duller than citron yellow and deeper than linden green

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“Oil yellow.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/oil%20yellow. Accessed 16 December 2019.

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